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Lake Mayanrd
Chapter 6 Muscles
| Question | Answer |
|---|---|
| Muscle Cells | Muscle fibers |
| muscle responsible for smiling | zygomaticus |
| contractility? | the ability of skeletal muscle to shorten with force |
| fascia? | located outside the epimysium. It surrounds and separates muscles. |
| excitability | the capacity of skeletal muscle to respond to a stimulus |
| mastication muscle- deep to the mandible | pterygoid |
| lateral neck muscle | rotates and abducts the head |
| occipitofrontalis (frontalis) | raises the eyebrows |
| levator labii superioris-responsibility? | sneering |
| changes the shape of the tongue. | intrinsic tongue muscles |
| temporalis-responsibility? | chewing |
| fast-twitch fibers | contract quickly and fatigue quickly |
| muscle tone | constant tension produced by muscles of the body for long periods of time |
| anaerobic respiration | without oxygen |
| aerobic respiration | with oxygen |
| slow-twitch fibers | contract slowly and more resistant to fatigue |
| origin (head) | most stationary end of the muscle |
| insertion | end of muscle undergoing the greatest movement |
| portion between the origin and the insertion | belly |
| amount of oxygen needed to convert lactic acid to glucose | oxygen debt |
| muscles that work together to accomplish specific movements | synergists |
| muscles that work in opposition to one another | antagonists |
| one muscle that plays the major role in accomplishing the desired movement | prime mover |
| length of the muscle contraction does not change | isometric |
| amount of tension produced by the muscle | isotonic |
| masseter-responsibilty? | chewing |
| prime mover of the lateral neck muscle? | sternocliedomastoid |
| torticollis | meaning a twisted neck |
| moves the tongue | extrinsic tongue muscles |
| pulls corners of the mouth downward | platysma |
| single sheetlike muscle that covers the anterolateral neck | platysma |
| muscle used to frown? | depressor anguli oris |
| points of attachment of each muscle | origin and insertion |
| 2 types of muscle contractions | isometric and isotonic |
| results when ATP is used during muscle contraction faster than it can be produced | muscle fatigue |
| kissing muscles | orbicularis and buccinator |
| orbicularis oris | puckers the lips |
| flattens the cheek "trumpeters muscle" | buccinator |
| closes the eyelids and causes crow's feet | orbicularis oculi |
| contraction of an entire muscle | muscle twitch |
| sliding of actin myofiloments past myosin myofilaments during contraction | sliding filament mechanism |
| the muscle fiber will contract maximally at its | threshold |
| known as "abs" | rectus abdomonis |
| elevate ribs during respiration | external intercostals |
| "white line" extends from sternum to the pubis | linea alba |
| deltoid? | felxes, extends, and abducts the arm |
| erector spinae? | group of muscles on each side of back, responsible for keeping back straight and body erect |
| responsible for quiet breathing | diaphram |
| gives the rectus abdomonis a segmented appearence in muscled person | tendinous inscriptions |
| "swimmer's muscle" | latissimus dorsi |
| attaches humerous to scapula | rotator cuff muscles |
| shoulder, attaches humerous to scapula and clavicle, adducts the upper limb | deltoid |
| extends forearm | triceps brachii |
| flexes the forearm | biceps brachii |
| primary flexor of the forearm | brachialis |
| flexes and pronates the forearm | brachioradialis |
| flexes wrist | flexor carpi |
| extends the wrist | extensor carpi |
| buttocks | gluteus maximus |
| bulge of the calves | gastronemius and soleus |
Created by:
lakemaynard
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